author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 15:30:33 +0300 | |
branch | RCL_3 |
changeset 29 | 567bb019e3e3 |
parent 0 | 0e761a78d257 |
child 30 | 7e817e7e631c |
permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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/** |
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* SECTION:gstaudio |
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* @short_description: Support library for audio elements |
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* |
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* This library contains some helper functions for audio elements. |
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*/ |
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#ifdef HAVE_CONFIG_H |
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# include "config.h" |
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#endif |
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#include "audio.h" |
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#include "audio-enumtypes.h" |
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#include <gst/gststructure.h> |
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/** |
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* gst_audio_frame_byte_size: |
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* @pad: the #GstPad to get the caps from |
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* |
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* Calculate byte size of an audio frame. |
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* |
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* Returns: the byte size, or 0 if there was an error |
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*/ |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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int |
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gst_audio_frame_byte_size (GstPad * pad) |
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{ |
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/* FIXME: this should be moved closer to the gstreamer core |
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* and be implemented for every mime type IMO |
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*/ |
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int width = 0; |
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int channels = 0; |
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const GstCaps *caps = NULL; |
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GstStructure *structure; |
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/* get caps of pad */ |
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caps = GST_PAD_CAPS (pad); |
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if (caps == NULL) { |
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/* ERROR: could not get caps of pad */ |
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g_warning ("gstaudio: could not get caps of pad %s:%s\n", |
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GST_DEBUG_PAD_NAME (pad)); |
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return 0; |
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} |
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structure = gst_caps_get_structure (caps, 0); |
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gst_structure_get_int (structure, "width", &width); |
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gst_structure_get_int (structure, "channels", &channels); |
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return (width / 8) * channels; |
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} |
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/** |
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* gst_audio_frame_length: |
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* @pad: the #GstPad to get the caps from |
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* @buf: the #GstBuffer |
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* |
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* Calculate length of buffer in frames. |
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* |
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* Returns: 0 if there's an error, or the number of frames if everything's ok |
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*/ |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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long |
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gst_audio_frame_length (GstPad * pad, GstBuffer * buf) |
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{ |
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/* FIXME: this should be moved closer to the gstreamer core |
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* and be implemented for every mime type IMO |
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*/ |
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int frame_byte_size = 0; |
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frame_byte_size = gst_audio_frame_byte_size (pad); |
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if (frame_byte_size == 0) |
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/* error */ |
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return 0; |
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/* FIXME: this function assumes the buffer size to be a whole multiple |
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* of the frame byte size |
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*/ |
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return GST_BUFFER_SIZE (buf) / frame_byte_size; |
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105 |
} |
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106 |
|
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107 |
/** |
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108 |
* gst_audio_duration_from_pad_buffer: |
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* @pad: the #GstPad to get the caps from |
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* @buf: the #GstBuffer |
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111 |
* |
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* Calculate length in nanoseconds of audio buffer @buf based on capabilities of |
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* @pad. |
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* |
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* Returns: the length. |
0
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*/ |
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117 |
#ifdef __SYMBIAN32__ |
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118 |
EXPORT_C |
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#endif |
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120 |
|
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GstClockTime |
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gst_audio_duration_from_pad_buffer (GstPad * pad, GstBuffer * buf) |
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123 |
{ |
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long bytes = 0; |
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int width = 0; |
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int channels = 0; |
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int rate = 0; |
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128 |
|
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GstClockTime length; |
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130 |
|
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const GstCaps *caps = NULL; |
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GstStructure *structure; |
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133 |
|
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g_assert (GST_IS_BUFFER (buf)); |
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/* get caps of pad */ |
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caps = GST_PAD_CAPS (pad); |
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if (caps == NULL) { |
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/* ERROR: could not get caps of pad */ |
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g_warning ("gstaudio: could not get caps of pad %s:%s\n", |
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GST_DEBUG_PAD_NAME (pad)); |
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length = GST_CLOCK_TIME_NONE; |
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} else { |
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structure = gst_caps_get_structure (caps, 0); |
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bytes = GST_BUFFER_SIZE (buf); |
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gst_structure_get_int (structure, "width", &width); |
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gst_structure_get_int (structure, "channels", &channels); |
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gst_structure_get_int (structure, "rate", &rate); |
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148 |
|
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g_assert (bytes != 0); |
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g_assert (width != 0); |
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g_assert (channels != 0); |
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g_assert (rate != 0); |
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length = (bytes * 8 * GST_SECOND) / (rate * channels * width); |
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} |
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return length; |
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} |
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157 |
|
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158 |
/** |
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* gst_audio_is_buffer_framed: |
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* @pad: the #GstPad to get the caps from |
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* @buf: the #GstBuffer |
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* |
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* Check if the buffer size is a whole multiple of the frame size. |
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* |
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* Returns: %TRUE if buffer size is multiple. |
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*/ |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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170 |
|
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gboolean |
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gst_audio_is_buffer_framed (GstPad * pad, GstBuffer * buf) |
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173 |
{ |
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if (GST_BUFFER_SIZE (buf) % gst_audio_frame_byte_size (pad) == 0) |
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return TRUE; |
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else |
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return FALSE; |
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} |
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179 |
|
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/* _getcaps helper functions |
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* sets structure fields to default for audio type |
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* flag determines which structure fields to set to default |
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* keep these functions in sync with the templates in audio.h |
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*/ |
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185 |
|
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/* private helper function |
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* sets a list on the structure |
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* pass in structure, fieldname for the list, type of the list values, |
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* number of list values, and each of the values, terminating with NULL |
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*/ |
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191 |
static void |
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_gst_audio_structure_set_list (GstStructure * structure, |
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const gchar * fieldname, GType type, int number, ...) |
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194 |
{ |
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va_list varargs; |
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GValue value = { 0 }; |
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GArray *array; |
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int j; |
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199 |
|
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g_return_if_fail (structure != NULL); |
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201 |
|
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g_value_init (&value, GST_TYPE_LIST); |
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array = g_value_peek_pointer (&value); |
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204 |
|
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va_start (varargs, number); |
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206 |
|
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for (j = 0; j < number; ++j) { |
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int i; |
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gboolean b; |
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|
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GValue list_value = { 0 }; |
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212 |
|
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switch (type) { |
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case G_TYPE_INT: |
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i = va_arg (varargs, int); |
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216 |
|
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g_value_init (&list_value, G_TYPE_INT); |
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g_value_set_int (&list_value, i); |
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break; |
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case G_TYPE_BOOLEAN: |
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b = va_arg (varargs, gboolean); |
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g_value_init (&list_value, G_TYPE_BOOLEAN); |
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g_value_set_boolean (&list_value, b); |
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break; |
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default: |
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g_warning |
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("_gst_audio_structure_set_list: LIST of given type not implemented."); |
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} |
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g_array_append_val (array, list_value); |
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230 |
|
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} |
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gst_structure_set_value (structure, fieldname, &value); |
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va_end (varargs); |
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} |
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235 |
|
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/** |
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* gst_audio_structure_set_int: |
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* @structure: a #GstStructure |
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* @flag: a set of #GstAudioFieldFlag |
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* |
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* Do not use anymore. |
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* |
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* Deprecated: use gst_structure_set() |
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*/ |
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#ifndef GST_REMOVE_DEPRECATED |
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#ifdef GST_DISABLE_DEPRECATED |
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typedef enum |
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{ |
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GST_AUDIO_FIELD_RATE = (1 << 0), |
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GST_AUDIO_FIELD_CHANNELS = (1 << 1), |
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GST_AUDIO_FIELD_ENDIANNESS = (1 << 2), |
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GST_AUDIO_FIELD_WIDTH = (1 << 3), |
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GST_AUDIO_FIELD_DEPTH = (1 << 4), |
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GST_AUDIO_FIELD_SIGNED = (1 << 5), |
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} GstAudioFieldFlag; |
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#endif /* GST_DISABLE_DEPRECATED */ |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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260 |
|
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261 |
|
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void |
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gst_audio_structure_set_int (GstStructure * structure, GstAudioFieldFlag flag) |
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264 |
{ |
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/* was added here: |
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* http://webcvs.freedesktop.org/gstreamer/gst-plugins-base/gst-libs/gst/audio/audio.c?r1=1.16&r2=1.17 |
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* but it is not used |
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*/ |
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if (flag & GST_AUDIO_FIELD_RATE) |
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gst_structure_set (structure, "rate", GST_TYPE_INT_RANGE, 1, G_MAXINT, |
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NULL); |
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if (flag & GST_AUDIO_FIELD_CHANNELS) |
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gst_structure_set (structure, "channels", GST_TYPE_INT_RANGE, 1, G_MAXINT, |
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NULL); |
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if (flag & GST_AUDIO_FIELD_ENDIANNESS) |
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_gst_audio_structure_set_list (structure, "endianness", G_TYPE_INT, 2, |
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G_LITTLE_ENDIAN, G_BIG_ENDIAN, NULL); |
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if (flag & GST_AUDIO_FIELD_WIDTH) |
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_gst_audio_structure_set_list (structure, "width", G_TYPE_INT, 3, 8, 16, 32, |
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NULL); |
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if (flag & GST_AUDIO_FIELD_DEPTH) |
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gst_structure_set (structure, "depth", GST_TYPE_INT_RANGE, 1, 32, NULL); |
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if (flag & GST_AUDIO_FIELD_SIGNED) |
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_gst_audio_structure_set_list (structure, "signed", G_TYPE_BOOLEAN, 2, TRUE, |
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FALSE, NULL); |
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} |
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#endif /* GST_REMOVE_DEPRECATED */ |
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288 |
|
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/** |
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* gst_audio_buffer_clip: |
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* @buffer: The buffer to clip. |
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* @segment: Segment in %GST_FORMAT_TIME or %GST_FORMAT_DEFAULT to which the buffer should be clipped. |
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* @rate: sample rate. |
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* @frame_size: size of one audio frame in bytes. |
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* |
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* Clip the the buffer to the given %GstSegment. |
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* |
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* After calling this function the caller does not own a reference to |
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* @buffer anymore. |
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* |
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* Returns: %NULL if the buffer is completely outside the configured segment, |
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* otherwise the clipped buffer is returned. |
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* |
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* If the buffer has no timestamp, it is assumed to be inside the segment and |
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* is not clipped |
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* |
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* Since: 0.10.14 |
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*/ |
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#ifdef __SYMBIAN32__ |
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EXPORT_C |
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#endif |
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312 |
|
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GstBuffer * |
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parents:
diff
changeset
|
314 |
gst_audio_buffer_clip (GstBuffer * buffer, GstSegment * segment, gint rate, |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
315 |
gint frame_size) |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
316 |
{ |
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Revision: 200949
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parents:
diff
changeset
|
317 |
GstBuffer *ret; |
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Revision: 200949
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parents:
diff
changeset
|
318 |
GstClockTime timestamp = GST_CLOCK_TIME_NONE, duration = GST_CLOCK_TIME_NONE; |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
319 |
guint64 offset = GST_BUFFER_OFFSET_NONE, offset_end = GST_BUFFER_OFFSET_NONE; |
0e761a78d257
Revision: 200949
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parents:
diff
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|
320 |
guint8 *data; |
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Revision: 200949
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parents:
diff
changeset
|
321 |
guint size; |
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parents:
diff
changeset
|
322 |
|
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Revision: 200949
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parents:
diff
changeset
|
323 |
gboolean change_duration = TRUE, change_offset = TRUE, change_offset_end = |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
324 |
TRUE; |
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Revision: 200949
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parents:
diff
changeset
|
325 |
|
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
326 |
g_return_val_if_fail (segment->format == GST_FORMAT_TIME || |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
327 |
segment->format == GST_FORMAT_DEFAULT, buffer); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
328 |
g_return_val_if_fail (GST_IS_BUFFER (buffer), NULL); |
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Revision: 200949
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parents:
diff
changeset
|
329 |
|
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
330 |
if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
331 |
/* No timestamp - assume the buffer is completely in the segment */ |
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Revision: 200949
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parents:
diff
changeset
|
332 |
return buffer; |
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Revision: 200949
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parents:
diff
changeset
|
333 |
|
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
334 |
/* Get copies of the buffer metadata to change later. |
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
335 |
* Calculate the missing values for the calculations, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
336 |
* they won't be changed later though. */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
337 |
|
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
338 |
data = GST_BUFFER_DATA (buffer); |
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Revision: 200949
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parents:
diff
changeset
|
339 |
size = GST_BUFFER_SIZE (buffer); |
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parents:
diff
changeset
|
340 |
|
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Revision: 200949
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parents:
diff
changeset
|
341 |
timestamp = GST_BUFFER_TIMESTAMP (buffer); |
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
342 |
if (GST_BUFFER_DURATION_IS_VALID (buffer)) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
343 |
duration = GST_BUFFER_DURATION (buffer); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
344 |
} else { |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
345 |
change_duration = FALSE; |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
346 |
duration = gst_util_uint64_scale (size / frame_size, GST_SECOND, rate); |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
347 |
} |
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Revision: 200949
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parents:
diff
changeset
|
348 |
|
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Revision: 200949
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parents:
diff
changeset
|
349 |
if (GST_BUFFER_OFFSET_IS_VALID (buffer)) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
350 |
offset = GST_BUFFER_OFFSET (buffer); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
351 |
} else { |
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
352 |
change_offset = FALSE; |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
353 |
offset = 0; |
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Revision: 200949
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parents:
diff
changeset
|
354 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
355 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
356 |
if (GST_BUFFER_OFFSET_END_IS_VALID (buffer)) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
357 |
offset_end = GST_BUFFER_OFFSET_END (buffer); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
358 |
} else { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
359 |
change_offset_end = FALSE; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
360 |
offset_end = offset + size / frame_size; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
361 |
} |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
362 |
|
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
363 |
if (segment->format == GST_FORMAT_TIME) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
364 |
/* Handle clipping for GST_FORMAT_TIME */ |
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
365 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
366 |
gint64 start, stop, cstart, cstop, diff; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
367 |
|
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
368 |
start = timestamp; |
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Revision: 200949
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parents:
diff
changeset
|
369 |
stop = timestamp + duration; |
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Revision: 200949
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parents:
diff
changeset
|
370 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
371 |
if (gst_segment_clip (segment, GST_FORMAT_TIME, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
372 |
start, stop, &cstart, &cstop)) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
373 |
|
0e761a78d257
Revision: 200949
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parents:
diff
changeset
|
374 |
diff = cstart - start; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
375 |
if (diff > 0) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
376 |
timestamp = cstart; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
377 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
378 |
if (change_duration) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
379 |
duration -= diff; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
380 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
381 |
diff = gst_util_uint64_scale (diff, rate, GST_SECOND); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
382 |
if (change_offset) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
383 |
offset += diff; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
384 |
data += diff * frame_size; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
385 |
size -= diff * frame_size; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
386 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
387 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
388 |
diff = stop - cstop; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
389 |
if (diff > 0) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
390 |
/* duration is always valid if stop is valid */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
391 |
duration -= diff; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
392 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
393 |
diff = gst_util_uint64_scale (diff, rate, GST_SECOND); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
394 |
if (change_offset_end) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
395 |
offset_end -= diff; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
396 |
size -= diff * frame_size; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
397 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
398 |
} else { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
399 |
gst_buffer_unref (buffer); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
400 |
return NULL; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
401 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
402 |
} else { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
403 |
/* Handle clipping for GST_FORMAT_DEFAULT */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
404 |
gint64 start, stop, cstart, cstop, diff; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
405 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
406 |
g_return_val_if_fail (GST_BUFFER_OFFSET_IS_VALID (buffer), buffer); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
407 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
408 |
start = offset; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
409 |
stop = offset_end; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
410 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
411 |
if (gst_segment_clip (segment, GST_FORMAT_DEFAULT, |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
412 |
start, stop, &cstart, &cstop)) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
413 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
414 |
diff = cstart - start; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
415 |
if (diff > 0) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
416 |
offset = cstart; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
417 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
418 |
timestamp = gst_util_uint64_scale (cstart, GST_SECOND, rate); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
if (change_duration) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
421 |
duration -= gst_util_uint64_scale (diff, GST_SECOND, rate); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
422 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
423 |
data += diff * frame_size; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
424 |
size -= diff * frame_size; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
425 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
426 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
427 |
diff = stop - cstop; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
428 |
if (diff > 0) { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
429 |
offset_end = cstop; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
430 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
431 |
if (change_duration) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
432 |
duration -= gst_util_uint64_scale (diff, GST_SECOND, rate); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
433 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
434 |
size -= diff * frame_size; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
435 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
436 |
} else { |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
437 |
gst_buffer_unref (buffer); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
438 |
return NULL; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
439 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
440 |
} |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
441 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
442 |
/* Get a metadata writable buffer and apply all changes */ |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
443 |
ret = gst_buffer_make_metadata_writable (buffer); |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
444 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
445 |
GST_BUFFER_TIMESTAMP (ret) = timestamp; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
446 |
GST_BUFFER_SIZE (ret) = size; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
447 |
GST_BUFFER_DATA (ret) = data; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
448 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
449 |
if (change_duration) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
450 |
GST_BUFFER_DURATION (ret) = duration; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
451 |
if (change_offset) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
452 |
GST_BUFFER_OFFSET (ret) = offset; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
453 |
if (change_offset_end) |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
454 |
GST_BUFFER_OFFSET_END (ret) = offset_end; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
455 |
|
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
456 |
return ret; |
0e761a78d257
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
457 |
} |